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UC2845L-S08-R Fiches technique(PDF) 5 Page - Unisonic Technologies |
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UC2845L-S08-R Fiches technique(HTML) 5 Page - Unisonic Technologies |
5 / 7 page UC2844/45 LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 5 of 7 www.unisonic.com.tw Ver .A ELECTRICAL CHARACTERISTICS(Cont.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT CURRENT SENSE SECTION Current Sense Input Voltage Gain (Note 2 & 3) GV 2.85 3.0 3.15 V/V Maximum Current Sense Input Threshold (Note 2) VI(THR) 0.9 1.0 1.1 V Input Bias Current II(BIAS) -2.0 -10 μA Power Supply Rejection Ratio PSRR VCC=12V ~ 25V (Note4) 70 dB Propagation Delay tPLH(IN/OUT) 150 300 ns OUTPUT SECTION ISINK=20mA 0.1 0.4 Low VOL ISINK=200mA 1.6 2.2 V ISINK=20mA 13 13.5 Output Voltage High VOH ISINK=200mA 12 13.4 V Output Voltage with UVLO Activated VOL(UVLO)VCC=6.0V, ISINK=1.0mA 0.1 1.1 V Output Voltage Rise Time tR CL=1.0nF,TJ=25°C 50 150 ns Output Voltage Fall Time tF CL=1.0nF,TJ=25°C 50 150 ns UNDERVOLTAGE LOCKOUT SECTION UC2844 15 16.0 17 Startup Threshold UC2845 VTHR 7.8 8.4 9.0 V UC2844 9.0 10.0 11.0 Minimum Operating Voltage After Turn-On UC2845 VCC(MIN) 7.0 7.6 8.2 V PWM SECTION Max DCMAX 47 48 50 % Duty Cycle Min DCMIN 0 % TOTAL DEVICE Power Supply Zener Voltage VZ ICC=25mA 30 36 - V UC2845 VCC=6.5V 0.5 1.0 Power Supply Current (Note 4) UC2844 ICC VCC=14V 12 17 mA Note: 1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 2. This parameter is measured at the latch trip point with VFB=0V. 3. Comparator gain is defined as: ΔV Output Compensation AV= ΔV Current Sense Input 4. Adjust VCC above the startup threshold before setting to 15V. |
Numéro de pièce similaire - UC2845L-S08-R |
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Description similaire - UC2845L-S08-R |
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